./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 09:03:56,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:03:56,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:03:56,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:03:56,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:03:56,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:03:56,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:03:56,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:03:56,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:03:56,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:03:56,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:03:56,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:03:56,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:03:56,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:03:56,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:03:56,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:03:56,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:03:56,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:03:56,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:03:56,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:03:56,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:03:56,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:03:56,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:03:56,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:03:56,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:03:56,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:03:56,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:03:56,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:03:56,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:03:56,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:03:56,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:03:56,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:03:56,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:03:56,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:03:56,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:03:56,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:03:56,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:03:56,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:03:56,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:03:56,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:03:56,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:03:56,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:03:56,375 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:03:56,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:03:56,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:03:56,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:03:56,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:03:56,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:03:56,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:03:56,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:03:56,377 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:03:56,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:03:56,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:03:56,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:03:56,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:03:56,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:03:56,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:03:56,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:03:56,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:03:56,391 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:03:56,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:03:56,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:03:56,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:03:56,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:03:56,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:03:56,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:03:56,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:03:56,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:03:56,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:03:56,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:03:56,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:03:56,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:03:56,393 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:03:56,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:03:56,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:03:56,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 [2022-11-21 09:03:56,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:03:56,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:03:56,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:03:56,745 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:03:56,745 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:03:56,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2022-11-21 09:04:00,259 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:04:00,647 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:04:00,647 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2022-11-21 09:04:00,675 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/data/47aa04dd5/cd15030afc494a6f89111fd436289cc6/FLAGf0c1a05fd [2022-11-21 09:04:00,692 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/data/47aa04dd5/cd15030afc494a6f89111fd436289cc6 [2022-11-21 09:04:00,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:04:00,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:04:00,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:04:00,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:04:00,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:04:00,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:00" (1/1) ... [2022-11-21 09:04:00,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b64d0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:00, skipping insertion in model container [2022-11-21 09:04:00,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:00" (1/1) ... [2022-11-21 09:04:00,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:04:00,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:04:00,972 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i[949,962] [2022-11-21 09:04:01,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:04:01,403 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:04:01,421 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i[949,962] [2022-11-21 09:04:01,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:04:01,631 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:04:01,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01 WrapperNode [2022-11-21 09:04:01,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:04:01,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:04:01,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:04:01,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:04:01,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,764 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 274 [2022-11-21 09:04:01,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:04:01,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:04:01,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:04:01,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:04:01,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:04:01,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:04:01,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:04:01,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:04:01,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (1/1) ... [2022-11-21 09:04:01,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:04:01,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:04:01,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:04:01,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf615f2b-e5ae-4c2d-a2c3-8b04b12ca5c9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:04:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:04:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 09:04:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:04:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:04:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:04:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 09:04:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 09:04:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 09:04:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 09:04:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-21 09:04:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-21 09:04:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-21 09:04:01,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-21 09:04:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:04:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 09:04:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:04:01,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:04:01,966 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:04:02,151 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:04:02,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:04:03,063 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:04:03,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:04:03,311 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 09:04:03,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:03 BoogieIcfgContainer [2022-11-21 09:04:03,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:04:03,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:04:03,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:04:03,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:04:03,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:04:00" (1/3) ... [2022-11-21 09:04:03,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a66ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:03, skipping insertion in model container [2022-11-21 09:04:03,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:01" (2/3) ... [2022-11-21 09:04:03,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a66ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:03, skipping insertion in model container [2022-11-21 09:04:03,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:03" (3/3) ... [2022-11-21 09:04:03,324 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2022-11-21 09:04:03,333 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:04:03,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:04:03,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-21 09:04:03,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:04:03,416 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 09:04:03,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 157 transitions, 334 flow [2022-11-21 09:04:03,614 INFO L130 PetriNetUnfolder]: 2/153 cut-off events. [2022-11-21 09:04:03,618 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:04:03,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 2/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-21 09:04:03,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 157 transitions, 334 flow [2022-11-21 09:04:03,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 153 transitions, 318 flow [2022-11-21 09:04:03,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:04:03,652 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70be1d08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:04:03,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-21 09:04:03,677 INFO L130 PetriNetUnfolder]: 0/96 cut-off events. [2022-11-21 09:04:03,703 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:04:03,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:03,704 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:03,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash -412309149, now seen corresponding path program 1 times [2022-11-21 09:04:03,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:03,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329904597] [2022-11-21 09:04:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:03,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:04,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:04,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329904597] [2022-11-21 09:04:04,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329904597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:04,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:04,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:04:04,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295876967] [2022-11-21 09:04:04,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:04,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:04,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:04,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:04,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 157 [2022-11-21 09:04:04,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 153 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:04,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:04,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 157 [2022-11-21 09:04:04,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:05,443 INFO L130 PetriNetUnfolder]: 280/1697 cut-off events. [2022-11-21 09:04:05,443 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-21 09:04:05,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 1697 events. 280/1697 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 14232 event pairs, 186 based on Foata normal form. 54/1613 useless extension candidates. Maximal degree in co-relation 2099. Up to 377 conditions per place. [2022-11-21 09:04:05,471 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 22 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-11-21 09:04:05,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 157 transitions, 377 flow [2022-11-21 09:04:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:04:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-11-21 09:04:05,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9341825902335457 [2022-11-21 09:04:05,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-11-21 09:04:05,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-11-21 09:04:05,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:05,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-11-21 09:04:05,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:05,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:05,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:05,525 INFO L175 Difference]: Start difference. First operand has 164 places, 153 transitions, 318 flow. Second operand 3 states and 440 transitions. [2022-11-21 09:04:05,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 157 transitions, 377 flow [2022-11-21 09:04:05,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 157 transitions, 372 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:04:05,541 INFO L231 Difference]: Finished difference. Result has 160 places, 149 transitions, 310 flow [2022-11-21 09:04:05,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=160, PETRI_TRANSITIONS=149} [2022-11-21 09:04:05,552 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, -4 predicate places. [2022-11-21 09:04:05,552 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 149 transitions, 310 flow [2022-11-21 09:04:05,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:05,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:05,553 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:05,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:04:05,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:05,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash -692183132, now seen corresponding path program 1 times [2022-11-21 09:04:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:05,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321673806] [2022-11-21 09:04:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:05,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321673806] [2022-11-21 09:04:05,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321673806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:05,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:05,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:04:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356434754] [2022-11-21 09:04:05,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:05,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:05,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:05,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:05,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 157 [2022-11-21 09:04:05,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 149 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:05,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:05,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 157 [2022-11-21 09:04:05,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:06,282 INFO L130 PetriNetUnfolder]: 221/811 cut-off events. [2022-11-21 09:04:06,283 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-21 09:04:06,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 811 events. 221/811 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4599 event pairs, 44 based on Foata normal form. 0/765 useless extension candidates. Maximal degree in co-relation 1150. Up to 268 conditions per place. [2022-11-21 09:04:06,291 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 20 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2022-11-21 09:04:06,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 155 transitions, 368 flow [2022-11-21 09:04:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:04:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-11-21 09:04:06,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.921443736730361 [2022-11-21 09:04:06,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-11-21 09:04:06,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-11-21 09:04:06,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:06,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-11-21 09:04:06,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:06,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:06,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:06,300 INFO L175 Difference]: Start difference. First operand has 160 places, 149 transitions, 310 flow. Second operand 3 states and 434 transitions. [2022-11-21 09:04:06,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 155 transitions, 368 flow [2022-11-21 09:04:06,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:06,308 INFO L231 Difference]: Finished difference. Result has 159 places, 148 transitions, 308 flow [2022-11-21 09:04:06,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=159, PETRI_TRANSITIONS=148} [2022-11-21 09:04:06,310 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, -5 predicate places. [2022-11-21 09:04:06,310 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 148 transitions, 308 flow [2022-11-21 09:04:06,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:06,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:06,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:06,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:04:06,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1161816870, now seen corresponding path program 1 times [2022-11-21 09:04:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:06,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145900122] [2022-11-21 09:04:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:06,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:07,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:07,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145900122] [2022-11-21 09:04:07,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145900122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:07,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:07,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:07,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341765354] [2022-11-21 09:04:07,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:07,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:07,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:07,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 157 [2022-11-21 09:04:07,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 148 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:07,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:07,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 157 [2022-11-21 09:04:07,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:12,799 INFO L130 PetriNetUnfolder]: 7346/16825 cut-off events. [2022-11-21 09:04:12,799 INFO L131 PetriNetUnfolder]: For 580/580 co-relation queries the response was YES. [2022-11-21 09:04:12,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27856 conditions, 16825 events. 7346/16825 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 166542 event pairs, 1680 based on Foata normal form. 0/16386 useless extension candidates. Maximal degree in co-relation 27770. Up to 4037 conditions per place. [2022-11-21 09:04:12,920 INFO L137 encePairwiseOnDemand]: 142/157 looper letters, 49 selfloop transitions, 11 changer transitions 116/275 dead transitions. [2022-11-21 09:04:12,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 275 transitions, 914 flow [2022-11-21 09:04:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:04:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:04:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1674 transitions. [2022-11-21 09:04:12,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8201861832435081 [2022-11-21 09:04:12,927 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1674 transitions. [2022-11-21 09:04:12,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1674 transitions. [2022-11-21 09:04:12,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:12,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1674 transitions. [2022-11-21 09:04:12,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.76923076923077) internal successors, (1674), 13 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 157.0) internal successors, (2198), 14 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,941 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 157.0) internal successors, (2198), 14 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,941 INFO L175 Difference]: Start difference. First operand has 159 places, 148 transitions, 308 flow. Second operand 13 states and 1674 transitions. [2022-11-21 09:04:12,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 275 transitions, 914 flow [2022-11-21 09:04:12,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 275 transitions, 888 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:12,958 INFO L231 Difference]: Finished difference. Result has 181 places, 143 transitions, 426 flow [2022-11-21 09:04:12,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=426, PETRI_PLACES=181, PETRI_TRANSITIONS=143} [2022-11-21 09:04:12,959 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 17 predicate places. [2022-11-21 09:04:12,959 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 143 transitions, 426 flow [2022-11-21 09:04:12,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:12,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:12,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:04:12,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1244642886, now seen corresponding path program 1 times [2022-11-21 09:04:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:12,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053462063] [2022-11-21 09:04:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:13,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:13,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053462063] [2022-11-21 09:04:13,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053462063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:13,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:13,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:04:13,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184990780] [2022-11-21 09:04:13,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:13,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:04:13,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:13,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:04:13,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:13,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 157 [2022-11-21 09:04:13,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 143 transitions, 426 flow. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:13,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:13,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 157 [2022-11-21 09:04:13,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:15,805 INFO L130 PetriNetUnfolder]: 3199/6073 cut-off events. [2022-11-21 09:04:15,805 INFO L131 PetriNetUnfolder]: For 16569/20873 co-relation queries the response was YES. [2022-11-21 09:04:15,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23164 conditions, 6073 events. 3199/6073 cut-off events. For 16569/20873 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 45842 event pairs, 1477 based on Foata normal form. 150/6054 useless extension candidates. Maximal degree in co-relation 23077. Up to 2948 conditions per place. [2022-11-21 09:04:15,876 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 40 selfloop transitions, 4 changer transitions 70/227 dead transitions. [2022-11-21 09:04:15,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 227 transitions, 1274 flow [2022-11-21 09:04:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:04:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:04:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1250 transitions. [2022-11-21 09:04:15,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8846426043878273 [2022-11-21 09:04:15,881 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1250 transitions. [2022-11-21 09:04:15,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1250 transitions. [2022-11-21 09:04:15,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:15,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1250 transitions. [2022-11-21 09:04:15,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.88888888888889) internal successors, (1250), 9 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:15,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:15,891 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:15,891 INFO L175 Difference]: Start difference. First operand has 181 places, 143 transitions, 426 flow. Second operand 9 states and 1250 transitions. [2022-11-21 09:04:15,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 227 transitions, 1274 flow [2022-11-21 09:04:15,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 227 transitions, 1243 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-21 09:04:15,995 INFO L231 Difference]: Finished difference. Result has 169 places, 146 transitions, 482 flow [2022-11-21 09:04:15,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=169, PETRI_TRANSITIONS=146} [2022-11-21 09:04:15,997 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2022-11-21 09:04:15,997 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 146 transitions, 482 flow [2022-11-21 09:04:15,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:15,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:15,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:15,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:04:15,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:16,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:16,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1638602907, now seen corresponding path program 1 times [2022-11-21 09:04:16,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:16,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559735647] [2022-11-21 09:04:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:16,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:17,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:17,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559735647] [2022-11-21 09:04:17,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559735647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:17,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:17,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765498374] [2022-11-21 09:04:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:17,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:17,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 157 [2022-11-21 09:04:17,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 146 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:17,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:17,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 157 [2022-11-21 09:04:17,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:20,102 INFO L130 PetriNetUnfolder]: 3744/7622 cut-off events. [2022-11-21 09:04:20,102 INFO L131 PetriNetUnfolder]: For 21592/32466 co-relation queries the response was YES. [2022-11-21 09:04:20,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29038 conditions, 7622 events. 3744/7622 cut-off events. For 21592/32466 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 61118 event pairs, 590 based on Foata normal form. 151/7633 useless extension candidates. Maximal degree in co-relation 28935. Up to 3092 conditions per place. [2022-11-21 09:04:20,194 INFO L137 encePairwiseOnDemand]: 139/157 looper letters, 54 selfloop transitions, 23 changer transitions 88/264 dead transitions. [2022-11-21 09:04:20,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 264 transitions, 1761 flow [2022-11-21 09:04:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:04:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:04:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1645 transitions. [2022-11-21 09:04:20,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8059774620284175 [2022-11-21 09:04:20,201 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1645 transitions. [2022-11-21 09:04:20,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1645 transitions. [2022-11-21 09:04:20,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:20,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1645 transitions. [2022-11-21 09:04:20,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.53846153846153) internal successors, (1645), 13 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:20,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 157.0) internal successors, (2198), 14 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:20,213 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 157.0) internal successors, (2198), 14 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:20,214 INFO L175 Difference]: Start difference. First operand has 169 places, 146 transitions, 482 flow. Second operand 13 states and 1645 transitions. [2022-11-21 09:04:20,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 264 transitions, 1761 flow [2022-11-21 09:04:20,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 264 transitions, 1706 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-11-21 09:04:20,293 INFO L231 Difference]: Finished difference. Result has 180 places, 162 transitions, 751 flow [2022-11-21 09:04:20,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=751, PETRI_PLACES=180, PETRI_TRANSITIONS=162} [2022-11-21 09:04:20,297 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 16 predicate places. [2022-11-21 09:04:20,297 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 162 transitions, 751 flow [2022-11-21 09:04:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:20,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:20,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:20,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:04:20,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:20,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1419226250, now seen corresponding path program 1 times [2022-11-21 09:04:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:20,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193903889] [2022-11-21 09:04:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:20,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:20,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193903889] [2022-11-21 09:04:20,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193903889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:20,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:20,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:04:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626523272] [2022-11-21 09:04:20,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:20,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:04:20,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:04:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:20,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 157 [2022-11-21 09:04:20,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 162 transitions, 751 flow. Second operand has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:20,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:20,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 157 [2022-11-21 09:04:20,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:27,689 INFO L130 PetriNetUnfolder]: 17865/28276 cut-off events. [2022-11-21 09:04:27,689 INFO L131 PetriNetUnfolder]: For 138303/153189 co-relation queries the response was YES. [2022-11-21 09:04:27,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108621 conditions, 28276 events. 17865/28276 cut-off events. For 138303/153189 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 222524 event pairs, 1449 based on Foata normal form. 563/27131 useless extension candidates. Maximal degree in co-relation 108518. Up to 9740 conditions per place. [2022-11-21 09:04:28,000 INFO L137 encePairwiseOnDemand]: 146/157 looper letters, 120 selfloop transitions, 14 changer transitions 87/342 dead transitions. [2022-11-21 09:04:28,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 342 transitions, 2721 flow [2022-11-21 09:04:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:28,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1384 transitions. [2022-11-21 09:04:28,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8815286624203822 [2022-11-21 09:04:28,006 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1384 transitions. [2022-11-21 09:04:28,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1384 transitions. [2022-11-21 09:04:28,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:28,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1384 transitions. [2022-11-21 09:04:28,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.4) internal successors, (1384), 10 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:28,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:28,018 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:28,018 INFO L175 Difference]: Start difference. First operand has 180 places, 162 transitions, 751 flow. Second operand 10 states and 1384 transitions. [2022-11-21 09:04:28,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 342 transitions, 2721 flow [2022-11-21 09:04:28,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 342 transitions, 2678 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-11-21 09:04:28,419 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 832 flow [2022-11-21 09:04:28,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=832, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2022-11-21 09:04:28,423 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 15 predicate places. [2022-11-21 09:04:28,423 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 832 flow [2022-11-21 09:04:28,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:28,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:28,424 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:28,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:04:28,425 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:28,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1849527183, now seen corresponding path program 1 times [2022-11-21 09:04:28,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:28,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870016362] [2022-11-21 09:04:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:29,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:29,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870016362] [2022-11-21 09:04:29,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870016362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:29,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:29,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:29,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445449121] [2022-11-21 09:04:29,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:29,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:29,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:29,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:29,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 157 [2022-11-21 09:04:29,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:29,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 157 [2022-11-21 09:04:29,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:33,269 INFO L130 PetriNetUnfolder]: 4776/13688 cut-off events. [2022-11-21 09:04:33,269 INFO L131 PetriNetUnfolder]: For 35028/54401 co-relation queries the response was YES. [2022-11-21 09:04:33,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47952 conditions, 13688 events. 4776/13688 cut-off events. For 35028/54401 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 156127 event pairs, 2053 based on Foata normal form. 406/13020 useless extension candidates. Maximal degree in co-relation 47836. Up to 3332 conditions per place. [2022-11-21 09:04:33,451 INFO L137 encePairwiseOnDemand]: 145/157 looper letters, 101 selfloop transitions, 26 changer transitions 0/238 dead transitions. [2022-11-21 09:04:33,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 238 transitions, 1654 flow [2022-11-21 09:04:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1262 transitions. [2022-11-21 09:04:33,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8038216560509555 [2022-11-21 09:04:33,458 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1262 transitions. [2022-11-21 09:04:33,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1262 transitions. [2022-11-21 09:04:33,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:33,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1262 transitions. [2022-11-21 09:04:33,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.2) internal successors, (1262), 10 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,470 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,470 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 832 flow. Second operand 10 states and 1262 transitions. [2022-11-21 09:04:33,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 238 transitions, 1654 flow [2022-11-21 09:04:33,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 238 transitions, 1624 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-21 09:04:33,807 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 990 flow [2022-11-21 09:04:33,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=990, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2022-11-21 09:04:33,808 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 27 predicate places. [2022-11-21 09:04:33,809 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 990 flow [2022-11-21 09:04:33,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:33,810 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:04:33,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1828861361, now seen corresponding path program 1 times [2022-11-21 09:04:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:33,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88661220] [2022-11-21 09:04:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:33,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:34,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:34,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88661220] [2022-11-21 09:04:34,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88661220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:34,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:34,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36303216] [2022-11-21 09:04:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:34,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 157 [2022-11-21 09:04:34,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 990 flow. Second operand has 7 states, 7 states have (on average 128.71428571428572) internal successors, (901), 7 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:34,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:34,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 157 [2022-11-21 09:04:34,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:43,810 INFO L130 PetriNetUnfolder]: 22126/36798 cut-off events. [2022-11-21 09:04:43,810 INFO L131 PetriNetUnfolder]: For 197422/217990 co-relation queries the response was YES. [2022-11-21 09:04:43,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163413 conditions, 36798 events. 22126/36798 cut-off events. For 197422/217990 co-relation queries the response was YES. Maximal size of possible extension queue 2236. Compared 323179 event pairs, 928 based on Foata normal form. 1478/36701 useless extension candidates. Maximal degree in co-relation 163298. Up to 11863 conditions per place. [2022-11-21 09:04:44,049 INFO L137 encePairwiseOnDemand]: 146/157 looper letters, 175 selfloop transitions, 22 changer transitions 111/429 dead transitions. [2022-11-21 09:04:44,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 429 transitions, 3752 flow [2022-11-21 09:04:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:04:44,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:04:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1799 transitions. [2022-11-21 09:04:44,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8814306712395884 [2022-11-21 09:04:44,061 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1799 transitions. [2022-11-21 09:04:44,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1799 transitions. [2022-11-21 09:04:44,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:44,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1799 transitions. [2022-11-21 09:04:44,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 138.3846153846154) internal successors, (1799), 13 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:44,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 157.0) internal successors, (2198), 14 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:44,242 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 157.0) internal successors, (2198), 14 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:44,242 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 990 flow. Second operand 13 states and 1799 transitions. [2022-11-21 09:04:44,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 429 transitions, 3752 flow [2022-11-21 09:04:45,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 429 transitions, 3698 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:45,285 INFO L231 Difference]: Finished difference. Result has 207 places, 181 transitions, 1003 flow [2022-11-21 09:04:45,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1003, PETRI_PLACES=207, PETRI_TRANSITIONS=181} [2022-11-21 09:04:45,286 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 43 predicate places. [2022-11-21 09:04:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 181 transitions, 1003 flow [2022-11-21 09:04:45,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.71428571428572) internal successors, (901), 7 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:45,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:45,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:45,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:04:45,288 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:45,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash -178888397, now seen corresponding path program 1 times [2022-11-21 09:04:45,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:45,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161108051] [2022-11-21 09:04:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:46,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:46,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161108051] [2022-11-21 09:04:46,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161108051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:46,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:46,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 09:04:46,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989313263] [2022-11-21 09:04:46,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:46,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:46,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:46,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:46,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:46,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 157 [2022-11-21 09:04:46,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 181 transitions, 1003 flow. Second operand has 8 states, 8 states have (on average 128.75) internal successors, (1030), 8 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:46,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:46,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 157 [2022-11-21 09:04:46,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:52,137 INFO L130 PetriNetUnfolder]: 12076/22611 cut-off events. [2022-11-21 09:04:52,138 INFO L131 PetriNetUnfolder]: For 143313/152944 co-relation queries the response was YES. [2022-11-21 09:04:52,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108747 conditions, 22611 events. 12076/22611 cut-off events. For 143313/152944 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 214441 event pairs, 697 based on Foata normal form. 974/22873 useless extension candidates. Maximal degree in co-relation 108630. Up to 6376 conditions per place. [2022-11-21 09:04:52,312 INFO L137 encePairwiseOnDemand]: 146/157 looper letters, 158 selfloop transitions, 38 changer transitions 95/412 dead transitions. [2022-11-21 09:04:52,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 412 transitions, 3739 flow [2022-11-21 09:04:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 09:04:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1943 transitions. [2022-11-21 09:04:52,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8839854413102821 [2022-11-21 09:04:52,320 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1943 transitions. [2022-11-21 09:04:52,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1943 transitions. [2022-11-21 09:04:52,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:52,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1943 transitions. [2022-11-21 09:04:52,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 138.78571428571428) internal successors, (1943), 14 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:52,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:52,336 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:52,336 INFO L175 Difference]: Start difference. First operand has 207 places, 181 transitions, 1003 flow. Second operand 14 states and 1943 transitions. [2022-11-21 09:04:52,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 412 transitions, 3739 flow [2022-11-21 09:04:55,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 412 transitions, 3558 flow, removed 82 selfloop flow, removed 11 redundant places. [2022-11-21 09:04:55,529 INFO L231 Difference]: Finished difference. Result has 203 places, 199 transitions, 1216 flow [2022-11-21 09:04:55,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1216, PETRI_PLACES=203, PETRI_TRANSITIONS=199} [2022-11-21 09:04:55,530 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 39 predicate places. [2022-11-21 09:04:55,530 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 199 transitions, 1216 flow [2022-11-21 09:04:55,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.75) internal successors, (1030), 8 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:55,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:55,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:55,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:04:55,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:04:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1896971188, now seen corresponding path program 1 times [2022-11-21 09:04:55,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:55,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206718738] [2022-11-21 09:04:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:56,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:56,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206718738] [2022-11-21 09:04:56,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206718738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:56,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:56,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 09:04:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290935162] [2022-11-21 09:04:56,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 09:04:56,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 09:04:56,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:04:56,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 157 [2022-11-21 09:04:56,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 199 transitions, 1216 flow. Second operand has 9 states, 9 states have (on average 128.66666666666666) internal successors, (1158), 9 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:56,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:56,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 157 [2022-11-21 09:04:56,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:05:02,006 INFO L130 PetriNetUnfolder]: 11396/21772 cut-off events. [2022-11-21 09:05:02,007 INFO L131 PetriNetUnfolder]: For 131168/140018 co-relation queries the response was YES. [2022-11-21 09:05:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101708 conditions, 21772 events. 11396/21772 cut-off events. For 131168/140018 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 210988 event pairs, 687 based on Foata normal form. 671/21740 useless extension candidates. Maximal degree in co-relation 101593. Up to 6048 conditions per place. [2022-11-21 09:05:02,387 INFO L137 encePairwiseOnDemand]: 146/157 looper letters, 143 selfloop transitions, 43 changer transitions 72/377 dead transitions. [2022-11-21 09:05:02,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 377 transitions, 3301 flow [2022-11-21 09:05:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 09:05:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 09:05:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2300 transitions. [2022-11-21 09:05:02,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86174597227426 [2022-11-21 09:05:02,394 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2300 transitions. [2022-11-21 09:05:02,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2300 transitions. [2022-11-21 09:05:02,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:05:02,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2300 transitions. [2022-11-21 09:05:02,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 135.2941176470588) internal successors, (2300), 17 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:02,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:02,411 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:02,412 INFO L175 Difference]: Start difference. First operand has 203 places, 199 transitions, 1216 flow. Second operand 17 states and 2300 transitions. [2022-11-21 09:05:02,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 377 transitions, 3301 flow [2022-11-21 09:05:05,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 377 transitions, 3004 flow, removed 115 selfloop flow, removed 11 redundant places. [2022-11-21 09:05:05,880 INFO L231 Difference]: Finished difference. Result has 215 places, 196 transitions, 1099 flow [2022-11-21 09:05:05,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1099, PETRI_PLACES=215, PETRI_TRANSITIONS=196} [2022-11-21 09:05:05,881 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 51 predicate places. [2022-11-21 09:05:05,882 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 196 transitions, 1099 flow [2022-11-21 09:05:05,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 128.66666666666666) internal successors, (1158), 9 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:05,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:05:05,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:05,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:05:05,884 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:05:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -759471450, now seen corresponding path program 1 times [2022-11-21 09:05:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:05,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570106201] [2022-11-21 09:05:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:05,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:06,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:06,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570106201] [2022-11-21 09:05:06,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570106201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:06,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:06,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:05:06,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420268483] [2022-11-21 09:05:06,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:05:06,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:06,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:05:06,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:05:06,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 157 [2022-11-21 09:05:06,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 196 transitions, 1099 flow. Second operand has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:06,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:05:06,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 157 [2022-11-21 09:05:06,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:05:08,521 INFO L130 PetriNetUnfolder]: 2079/8356 cut-off events. [2022-11-21 09:05:08,521 INFO L131 PetriNetUnfolder]: For 22538/23644 co-relation queries the response was YES. [2022-11-21 09:05:08,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29134 conditions, 8356 events. 2079/8356 cut-off events. For 22538/23644 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 107883 event pairs, 166 based on Foata normal form. 1/7867 useless extension candidates. Maximal degree in co-relation 29042. Up to 1031 conditions per place. [2022-11-21 09:05:08,619 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 36 selfloop transitions, 1 changer transitions 29/225 dead transitions. [2022-11-21 09:05:08,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 225 transitions, 1439 flow [2022-11-21 09:05:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:05:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 09:05:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 943 transitions. [2022-11-21 09:05:08,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8580527752502275 [2022-11-21 09:05:08,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 943 transitions. [2022-11-21 09:05:08,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 943 transitions. [2022-11-21 09:05:08,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:05:08,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 943 transitions. [2022-11-21 09:05:08,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:08,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:08,631 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:08,631 INFO L175 Difference]: Start difference. First operand has 215 places, 196 transitions, 1099 flow. Second operand 7 states and 943 transitions. [2022-11-21 09:05:08,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 225 transitions, 1439 flow [2022-11-21 09:05:09,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 225 transitions, 1180 flow, removed 80 selfloop flow, removed 20 redundant places. [2022-11-21 09:05:09,264 INFO L231 Difference]: Finished difference. Result has 203 places, 188 transitions, 841 flow [2022-11-21 09:05:09,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=841, PETRI_PLACES=203, PETRI_TRANSITIONS=188} [2022-11-21 09:05:09,265 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 39 predicate places. [2022-11-21 09:05:09,266 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 188 transitions, 841 flow [2022-11-21 09:05:09,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:09,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:05:09,267 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:09,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 09:05:09,267 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:05:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1213685556, now seen corresponding path program 2 times [2022-11-21 09:05:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:09,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885289858] [2022-11-21 09:05:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:09,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:13,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:13,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885289858] [2022-11-21 09:05:13,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885289858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:13,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:13,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 09:05:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857956211] [2022-11-21 09:05:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:13,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:05:13,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:05:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:05:13,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 157 [2022-11-21 09:05:13,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 188 transitions, 841 flow. Second operand has 16 states, 16 states have (on average 122.875) internal successors, (1966), 16 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:13,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:05:13,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 157 [2022-11-21 09:05:13,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:05:15,005 INFO L130 PetriNetUnfolder]: 1481/6232 cut-off events. [2022-11-21 09:05:15,005 INFO L131 PetriNetUnfolder]: For 6987/7238 co-relation queries the response was YES. [2022-11-21 09:05:15,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16110 conditions, 6232 events. 1481/6232 cut-off events. For 6987/7238 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 76818 event pairs, 80 based on Foata normal form. 2/5825 useless extension candidates. Maximal degree in co-relation 16079. Up to 639 conditions per place. [2022-11-21 09:05:15,064 INFO L137 encePairwiseOnDemand]: 143/157 looper letters, 45 selfloop transitions, 16 changer transitions 12/225 dead transitions. [2022-11-21 09:05:15,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 225 transitions, 1157 flow [2022-11-21 09:05:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:05:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 09:05:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1760 transitions. [2022-11-21 09:05:15,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8007279344858963 [2022-11-21 09:05:15,069 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1760 transitions. [2022-11-21 09:05:15,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1760 transitions. [2022-11-21 09:05:15,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:05:15,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1760 transitions. [2022-11-21 09:05:15,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 125.71428571428571) internal successors, (1760), 14 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:15,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:15,080 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:15,081 INFO L175 Difference]: Start difference. First operand has 203 places, 188 transitions, 841 flow. Second operand 14 states and 1760 transitions. [2022-11-21 09:05:15,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 225 transitions, 1157 flow [2022-11-21 09:05:15,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 225 transitions, 1131 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-21 09:05:15,388 INFO L231 Difference]: Finished difference. Result has 213 places, 194 transitions, 915 flow [2022-11-21 09:05:15,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=915, PETRI_PLACES=213, PETRI_TRANSITIONS=194} [2022-11-21 09:05:15,389 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 49 predicate places. [2022-11-21 09:05:15,390 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 194 transitions, 915 flow [2022-11-21 09:05:15,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 122.875) internal successors, (1966), 16 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:15,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:05:15,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 09:05:15,391 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:05:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1761493084, now seen corresponding path program 3 times [2022-11-21 09:05:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:15,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577442543] [2022-11-21 09:05:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:18,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:18,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577442543] [2022-11-21 09:05:18,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577442543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:18,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:18,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 09:05:18,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557949141] [2022-11-21 09:05:18,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:18,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:05:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:05:18,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:05:18,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 157 [2022-11-21 09:05:18,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 194 transitions, 915 flow. Second operand has 16 states, 16 states have (on average 121.0) internal successors, (1936), 16 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:18,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:05:18,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 157 [2022-11-21 09:05:18,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:05:20,288 INFO L130 PetriNetUnfolder]: 1707/6578 cut-off events. [2022-11-21 09:05:20,289 INFO L131 PetriNetUnfolder]: For 8553/8918 co-relation queries the response was YES. [2022-11-21 09:05:20,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17864 conditions, 6578 events. 1707/6578 cut-off events. For 8553/8918 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 80139 event pairs, 155 based on Foata normal form. 1/6148 useless extension candidates. Maximal degree in co-relation 17831. Up to 638 conditions per place. [2022-11-21 09:05:20,338 INFO L137 encePairwiseOnDemand]: 141/157 looper letters, 37 selfloop transitions, 15 changer transitions 28/230 dead transitions. [2022-11-21 09:05:20,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 230 transitions, 1321 flow [2022-11-21 09:05:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 09:05:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 09:05:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2085 transitions. [2022-11-21 09:05:20,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7811914574747096 [2022-11-21 09:05:20,343 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2085 transitions. [2022-11-21 09:05:20,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2085 transitions. [2022-11-21 09:05:20,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:05:20,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2085 transitions. [2022-11-21 09:05:20,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 122.6470588235294) internal successors, (2085), 17 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:20,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:20,356 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:20,356 INFO L175 Difference]: Start difference. First operand has 213 places, 194 transitions, 915 flow. Second operand 17 states and 2085 transitions. [2022-11-21 09:05:20,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 230 transitions, 1321 flow [2022-11-21 09:05:20,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 230 transitions, 1281 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-11-21 09:05:20,653 INFO L231 Difference]: Finished difference. Result has 227 places, 200 transitions, 999 flow [2022-11-21 09:05:20,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=999, PETRI_PLACES=227, PETRI_TRANSITIONS=200} [2022-11-21 09:05:20,654 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 63 predicate places. [2022-11-21 09:05:20,654 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 200 transitions, 999 flow [2022-11-21 09:05:20,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 121.0) internal successors, (1936), 16 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:20,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:05:20,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:20,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:05:20,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:05:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1368994310, now seen corresponding path program 4 times [2022-11-21 09:05:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:20,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029778427] [2022-11-21 09:05:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:23,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:23,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029778427] [2022-11-21 09:05:23,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029778427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:23,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:23,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 09:05:23,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766227741] [2022-11-21 09:05:23,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:23,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:05:23,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:05:23,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:05:23,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 157 [2022-11-21 09:05:23,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 200 transitions, 999 flow. Second operand has 11 states, 11 states have (on average 126.45454545454545) internal successors, (1391), 11 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:23,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:05:23,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 157 [2022-11-21 09:05:23,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:05:25,262 INFO L130 PetriNetUnfolder]: 1543/6246 cut-off events. [2022-11-21 09:05:25,262 INFO L131 PetriNetUnfolder]: For 8335/8688 co-relation queries the response was YES. [2022-11-21 09:05:25,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16942 conditions, 6246 events. 1543/6246 cut-off events. For 8335/8688 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 76228 event pairs, 78 based on Foata normal form. 7/5880 useless extension candidates. Maximal degree in co-relation 16902. Up to 620 conditions per place. [2022-11-21 09:05:25,350 INFO L137 encePairwiseOnDemand]: 146/157 looper letters, 41 selfloop transitions, 12 changer transitions 15/225 dead transitions. [2022-11-21 09:05:25,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 225 transitions, 1311 flow [2022-11-21 09:05:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:05:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 09:05:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1538 transitions. [2022-11-21 09:05:25,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8163481953290871 [2022-11-21 09:05:25,355 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1538 transitions. [2022-11-21 09:05:25,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1538 transitions. [2022-11-21 09:05:25,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:05:25,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1538 transitions. [2022-11-21 09:05:25,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 128.16666666666666) internal successors, (1538), 12 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:25,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:25,365 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:25,365 INFO L175 Difference]: Start difference. First operand has 227 places, 200 transitions, 999 flow. Second operand 12 states and 1538 transitions. [2022-11-21 09:05:25,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 225 transitions, 1311 flow [2022-11-21 09:05:25,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 225 transitions, 1277 flow, removed 10 selfloop flow, removed 10 redundant places. [2022-11-21 09:05:25,680 INFO L231 Difference]: Finished difference. Result has 227 places, 199 transitions, 1005 flow [2022-11-21 09:05:25,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1005, PETRI_PLACES=227, PETRI_TRANSITIONS=199} [2022-11-21 09:05:25,681 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 63 predicate places. [2022-11-21 09:05:25,681 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 199 transitions, 1005 flow [2022-11-21 09:05:25,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 126.45454545454545) internal successors, (1391), 11 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:25,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:05:25,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:25,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 09:05:25,683 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 09:05:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash 936993382, now seen corresponding path program 5 times [2022-11-21 09:05:25,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:25,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365112710] [2022-11-21 09:05:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:25,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:05:25,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:05:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:05:26,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:05:26,105 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 09:05:26,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2022-11-21 09:05:26,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-11-21 09:05:26,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-11-21 09:05:26,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2022-11-21 09:05:26,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-11-21 09:05:26,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2022-11-21 09:05:26,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2022-11-21 09:05:26,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-11-21 09:05:26,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-11-21 09:05:26,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 09:05:26,112 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:26,120 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 09:05:26,120 INFO L178 ceAbstractionStarter]: Computing trace abstraction results